As the project’s deputy leader Prof.Dr. Alcamo played a key role in developing the integrated scientific model of acid rain in Europe. Known as RAINS, the model was used in the negotiations of a major European treaty to control acid deposition. After IIASA, he led a major scientific effort in the Netherlands to build an integrated assessment model, IMAGE 2, of global climate change. He then moved to the University of Kassel, Germany in 1996 to direct the Center for Environmental Systems Research. Professor Dr. Alcamo has recently been appointed inaugural Chief Scientist of the United Nations Environment Program.